ION Audio Tailgater Express | Compact Water-Resistant Wireless Speaker System with AM/FM Radio & USB Charge Port (20W) 20 watts of dynamic power for memorable outdoors fun; Robust 4-inch woofer and wide-dispersion tweeter deliver high-quality sound IPX4 splash-resistant-perfect for beach or poolside use Built-in rechargeable battery provides up to 30 hours of continuous use AM/FM radio with bright, legible display NFC-enabled smartphone with a single tap; -inch (3.5mm) aux input; Microphone input for karaoke and more (mic not included)